Cita APA

Spencer, H. (1971). Herbert Spencer: Structure, function, and evolution. London: Joseph.

Chicago Style Citation

Spencer, Herbert. Herbert Spencer: Structure, Function, and Evolution. London: Joseph, 1971.

Cita MLA

Spencer, Herbert. Herbert Spencer: Structure, Function, and Evolution. London: Joseph, 1971.

Atenció: Aquestes cites poden no estar 100% correctes.